Automatic fire-alarm



(No Model.)

I. KITSEE.

AUTOMATIC PIRBALARM.

Patented Mar. 7,1882.

N. PETERS. PbolvLilbvgmpher. Wnhinghn. D. c.

UNITED STATES PATENT OFFICE.

ISIDOR KITSEE, OF CINCINNATI, OHIO.

AUTOMATIC FIRE-ALARM.

SPECIFICATION forming part of- Letters Patent No. 254,553, dated March7, 1882. Application filed December 12, 1881. (No model.)

T all whom it may concern Be it known that I, ISIDOR KITSEE, a citizenof the United States, residing at Oincin nati, in the county of Hamiltonand State of Ohio, have invented a new and useful Improvement inAutomatic Fire-Alarms, of which the following is a specification.

.My invention relates to that class of firealarms that are normallyclosed and inactive, but are brought into operation automatically duringan incipient fire by the melting of fusible connections.

Referring to the drawings that accompany this specification, Figure 1represents a chambered gun, partly in section, provided withspring-pressed cartridges, and a target provided with detonating nipplesand having attached bell and electric armature. Fig. 2 represents a formof holding the cartridges within the gun-chambers by means of a springheld retracted by wires anchored in fusible blocks. Figs. 3 and 4represent modified forms of controlling the cartridges.

Similar letters of reference indicate like parts on each figure.

The object of my invention is in case of a fire in a building to giveautomatically audible notice thereof.

Either form of my device may be used separately, or any or all of themmay be united, and one or more of my devices can be arranged in theseparate chambers of a building so as to be actuated simultaneously orsuccessively.

Ais a gun having chambers a, in each of which is placed a cartridge, B,preferably fulminated, held to the rear of the chamber by spring C, keptretracted by a fusible key, D, located in touch-holes or in any suitableposition.

E is a target provided with detonating nipples e, one of which islocated directly opposite the several chambers, to, of the gun A. To therear of the target is an electro-magnet, G, which is operated by anarmature, g, fastened by any suitable connection to the target. Thetarget is further provided with a bell, H, or spring-borne clapper, h,located so as to strike a gong, H, all as fully illustrated in Fig. 1.

When one of the fusible keys D melts it releases the spring 0, whichimmediately expands, and the cartridge B is projected against thecoincident nipple on the target, causing the cartridge B to strike andexplode the detonatin g nipple e and at the same time to actuate anysounding alarm attached to the target E.

The blocks or keys D, or whatever form of fusible connections I may usein my devices, I make fusible at different degrees of heat, so that asthe temperature rises a continuous bombardment of the target will bemaintained and repeated alarms given.

In the form shown in Fig. 2 the springs that control the cartridges Bare held by fusible wires 0, or wires anchored in fusible blocks D, asshown in detail in the drawings.

v Other forms of operating my device are shown in Figs. 3 and 4. In theformer the cartridges are kept backward pressed against the retractedspring 0 by means of forward fusible plugs, K, driven or screwed intothe muzzles of the several chambers a. Fig. 4 represents a form of mydevice, wherein the springs G are kept retracted by a pin or plug, 0,driven through an ordiuarytouch-hole. In this form of construction eachchamber has an independent trigger, L, each kept elevated by 4 means ofa fusible wire, (I. When a wire'that holds the trigger is melted thetrigger falls, drives in the pin or plug 0, and releases the sprin gitcontrols.

Having now fully described my invention, what I claim, is-

1. In an automatic fire-alarm, a chambered gun provided with cartridgesheld retracted by springs compressed by fusible keys, in combinationwith a target provided with.detonating nipples, substantially asdescribed.

2. In an automatic fire-alarm operated by melting of fusibleconnections, the target-E, having fulminating nipples e, in combinationwith a sounding alarm, substantially as described.

3. In an automatic fire-alarm, the chambered gun A, provided withretracted ejectible cartridge B and spring 0, anchored in fusible keys,substantially as described.

4. An operating mechanism for firealarms, having a series of fusibleconnections .composed of substances which melt at difierent degrees oftemperature, whereby a succession of alarms is given, as and for thepurpose intended, substantially as described.

ISIDOR KITSEE.

Witnesses Vroroa ABRAHAM, W. G. FIEDELDEY.

